[PATCH v2 7/7] s390/modules: Add rlimit checking for s390 modules
From: rick.p.edgecombe@intel.com (Rick Edgecombe)
Date: 2018-10-12 07:09:42
Also in:
linux-arch, linux-fsdevel, linux-mips, linux-s390, lkml, sparclinux
Subsystem:
s390 architecture, the rest · Maintainers:
Heiko Carstens, Vasily Gorbik, Alexander Gordeev, Linus Torvalds
This adds in the rlimit checking for the s390 module allocator. This has not been tested. Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com> --- arch/s390/kernel/module.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/arch/s390/kernel/module.c b/arch/s390/kernel/module.c
index d298d3cb46d0..6c2356a72b63 100644
--- a/arch/s390/kernel/module.c
+++ b/arch/s390/kernel/module.c@@ -32,12 +32,22 @@ void *module_alloc(unsigned long size) { + void *p; + if (PAGE_ALIGN(size) > MODULES_LEN) return NULL; - return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, + + if (check_inc_mod_rlimit(size)) + return NULL; + + p = __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, GFP_KERNEL, PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE, __builtin_return_address(0)); + + update_mod_rlimit(p, size); + + return p; } void module_arch_freeing_init(struct module *mod)
--
2.17.1